TMC will be closed until the 20th of August 2018

We will be deployed overseas until then.

But will re-open on the 20th of August


Welcome to

Thunder Mountain Custom


5431 S. San Pedro Ave.
Sierra Vista, AZ. 85650

(520) 803-9584 is your source for High Quality 1911 and 2011 parts at reasonable prices.  We specialize in only 1911 and 2011 handguns.  We work closely with the best parts manufactures of 1911 parts.

 You will not find any Metal Injection Molded parts in our inventory and very few cast parts.  The Thunder Mountain Custom "REAL STEEL" product line includes only parts that are CNC'ed from solid bar stock Chrome Moly and Stainless Steel.  All Aluminum parts are machined from aircraft grade aluminum billets.  Most of our "REAL STEEL components are priced the same or better than our competitions prices for MIM or Cast parts.



Tripple K Magazines


All Tripple K magazines are on sale.  You can find them under the "Clearance Sale".  Magazines are priced below distributor pricing.  We need room for new items, and need to move these out.  Quantities limited to that on hand.



We now have the full line of Tripp Research Magazines, Springs, Followers and Base Pads in stock and ready to ship.  Purchase 4 of the same Tripp Magazines and save $2.00 per magazine.

Extreme Enginerring

 The new line of Extreme Engineering hammers are now in stock.  Check out the new Patriot, Comet and Wide Spur Hammers

The new Heavy Duty Barrel Links and and Firing Pin stops are now in stock

New Products

We have added over 100 new products to the TMC line over the past 15 days.  The new parts include new hammers and triggers, solid bar stock safeties, and stainless steel components.

 Thank You

 The Best Aftermarket 1911 Parts